Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Any interest in developing an open source fuel economy gauge/computer?

dcb · 06-25-2010, 07:21 AM

do you have any idea how much an arduino BT costs? Hint, its $150.

I actually put a serial<->tcp proxy together, back in 2008 (like that post you responded to), also:
Arduino playground - JavaProxy

and used that to communicate with an atmega from python/web pages/whatever. But tcp and bluetooth is all pretty much overkill for a car when you can just read the serial port with a couple feet of wire.

Also, the guino is already transmitting injector/distance data. the obduino may be sending even more data (no lack of data on the actual obd and can busses either).

I think writing a can bus to sort-of-can-like protocol over tcp over bluetooth based "mpg gauge", for $200, is kinda rube goldbergish at best. Keep us posted

06-25-2010, 07:21 AM	#182 (permalink)
dcb needs more cowbell Join Date: Feb 2008 Location: ÿ Posts: 5,038 pimp mobile - '81 suzuki gs 250 t 90 day: 96.29 mpg (US) schnitzel - '01 Volkswagen Golf TDI 90 day: 53.56 mpg (US) Thanks: 158 Thanked 269 Times in 212 Posts	do you have any idea how much an arduino BT costs? Hint, its $150. I actually put a serial<->tcp proxy together, back in 2008 (like that post you responded to), also: Arduino playground - JavaProxy and used that to communicate with an atmega from python/web pages/whatever. But tcp and bluetooth is all pretty much overkill for a car when you can just read the serial port with a couple feet of wire. Also, the guino is already transmitting injector/distance data. the obduino may be sending even more data (no lack of data on the actual obd and can busses either). I think writing a can bus to sort-of-can-like protocol over tcp over bluetooth based "mpg gauge", for $200, is kinda rube goldbergish at best. Keep us posted __________________ WINDMILLS DO NOT WORK THAT WAY!!!